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Over [174]
3 years ago
13

42 = -7 (z - 3) z = ?

Mathematics
2 answers:
liubo4ka [24]3 years ago
3 0

Answer:

The answer to your question is z = -3

Step-by-step explanation:

Expand                 42 = -7(z - 3)

                             42 = -7z + 21

Simplify                 7z = -42 + 21

                             7z = -21

Clear z                    z = \frac{-21}{7}

                              z = -3                                                            

solniwko [45]3 years ago
3 0
42=-7z+21
42-21=-7z
21/-7=-7z/-7
-3=z
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uranmaximum [27]

Here it goes:

a. Because you have four blue marbles out of the 12 total marbles, the probability is 4/12. YOU MUST SIMPLIFY down to 1/3.

b. There are 12 marbles in the bag right now, and the probability is 4/12, you must add some marbles. 1/10 multiplied by 4 is 4/40. There are 4 blue marbles right now, and 40 minus the 12 there are right now is 38, so you would need to add 38 non-blue marbles.

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3 years ago
Find the value of x if p ll q​
Stolb23 [73]

Answer:

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4 0
3 years ago
-11 minus 5b = -6b minus 3
LiRa [457]

Answer:

b = 8

Step-by-step explanation:

-11 - 5b = -6b - 3

add 11 to both sides:

-5b = -6b + 8

add 6b to both sides:

-5b + 6b = 8

simplify:

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4 0
3 years ago
What is the perimeter of a semicircle with a diameter of 18?
dexar [7]
<h2>Answer:</h2>

<u>The perimeter is </u><u>56.52 uni</u><u>ts</u>

<h2>Step-by-step explanation:</h2>

The The perimeter of a circle is π × d where d is the diameter

So

P = pi * d

since d is 18 so putting in the equation

P = 3.14 * 18

P = 56.52

3 0
3 years ago
Find the distance from the point (1, 4) to the line y = 1/3x – 3. A) 2(square root) 10 units B) 4 units C) 4(square root) 2 unit
Oksi-84 [34.3K]

Answer:

Distance between line and point =

4√5 -3/2√10

Step-by-step explanation:

Distance between the line is

= √ ((9-0)²+(0+1)²)

= √ (89+1)

= √90

= 3√10

Half of the line = 3/2√10

Distance of one side of the line and the point.

= √((9-1)²+(0-4)²)

= √((8)²+(-4)²)

=√64+16

= √80

= 4√5

Distance between line and point =

4√5 -3/2√10

6 0
3 years ago
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